src/x11/utils.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utils.cpp
   3 // Purpose:     Various utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/setup.h"
  21 #include "wx/utils.h"
  22 #include "wx/app.h"
  23 #include "wx/apptrait.h"
  24 #include "wx/msgdlg.h"
  25 #include "wx/cursor.h"
  26 #include "wx/window.h" // for wxTopLevelWindows
  27
  28 #include <ctype.h>
  29 #include <stdarg.h>
  30 #include <dirent.h>
  31 #include <string.h>
  32 #include <sys/stat.h>
  33 #include <sys/types.h>
  34 #include <unistd.h>
  35 #include <sys/wait.h>
  36 #include <pwd.h>
  37 #include <errno.h>
  38 // #include <netdb.h>
  39 #include <signal.h>
  40
  41 #if (defined(__SUNCC__) || defined(__CLCC__))
  42     #include <sysent.h>
  43 #endif
  44
  45 #ifdef __VMS__
  46 #pragma message disable nosimpint
  47 #endif
  48
  49 #include "wx/unix/execute.h"
  50
  51 #include "wx/x11/private.h"
  52
  53 #include "X11/Xutil.h"
  54
  55 #ifdef __VMS__
  56 #pragma message enable nosimpint
  57 #endif
  58
  59 // ----------------------------------------------------------------------------
  60 // async event processing
  61 // ----------------------------------------------------------------------------
  62
  63 // Consume all events until no more left
  64 void wxFlushEvents()
  65 {
  66     Display *display = (Display*) wxGetDisplay();
  67
  68     XSync (display, FALSE);
  69
  70     // TODO for X11
  71     // ??
  72 }
  73
  74 bool wxCheckForInterrupt(wxWindow *wnd)
  75 {
  76     wxASSERT_MSG(FALSE, "wxCheckForInterrupt not yet implemented.");
  77     return FALSE;
  78 }
  79
  80 // ----------------------------------------------------------------------------
  81 // wxExecute stuff
  82 // ----------------------------------------------------------------------------
  83
  84 int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
  85 {
  86     // TODO
  87     return 0;
  88 }
  89
  90 // ----------------------------------------------------------------------------
  91 // misc
  92 // ----------------------------------------------------------------------------
  93
  94 // Emit a beeeeeep
  95 void wxBell()
  96 {
  97     // Use current setting for the bell
  98     XBell ((Display*) wxGetDisplay(), 0);
  99 }
 100
 101 wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo()
 102 {
 103     static wxToolkitInfo info;
 104     info.shortName = _T("x11univ");
 105     info.name = _T("wxX11");
 106     info.versionMajor = 0;
 107     info.versionMinor = 0;
 108     info.os = wxX11;
 109     return info;
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // display info
 114 // ----------------------------------------------------------------------------
 115
 116 void wxGetMousePosition( int* x, int* y )
 117 {
 118 #if wxUSE_NANOX
 119     // TODO
 120     *x = 0;
 121     *y = 0;
 122 #else
 123     XMotionEvent xev;
 124     Window root, child;
 125     XQueryPointer((Display*) wxGetDisplay(),
 126                   DefaultRootWindow((Display*) wxGetDisplay()),
 127                   &root, &child,
 128                   &(xev.x_root), &(xev.y_root),
 129                   &(xev.x),      &(xev.y),
 130                   &(xev.state));
 131     *x = xev.x_root;
 132     *y = xev.y_root;
 133 #endif
 134 };
 135
 136 // Return TRUE if we have a colour display
 137 bool wxColourDisplay()
 138 {
 139     return wxDisplayDepth() > 1;
 140 }
 141
 142 // Returns depth of screen
 143 int wxDisplayDepth()
 144 {
 145     Display *dpy = (Display*) wxGetDisplay();
 146
 147     return DefaultDepth (dpy, DefaultScreen (dpy));
 148 }
 149
 150 // Get size of display
 151 void wxDisplaySize(int *width, int *height)
 152 {
 153     Display *dpy = (Display*) wxGetDisplay();
 154
 155     if ( width )
 156         *width = DisplayWidth (dpy, DefaultScreen (dpy));
 157     if ( height )
 158         *height = DisplayHeight (dpy, DefaultScreen (dpy));
 159 }
 160
 161 void wxDisplaySizeMM(int *width, int *height)
 162 {
 163     Display *dpy = (Display*) wxGetDisplay();
 164
 165     if ( width )
 166         *width = DisplayWidthMM(dpy, DefaultScreen (dpy));
 167     if ( height )
 168         *height = DisplayHeightMM(dpy, DefaultScreen (dpy));
 169 }
 170
 171 void wxClientDisplayRect(int *x, int *y, int *width, int *height)
 172 {
 173     // This is supposed to return desktop dimensions minus any window
 174     // manager panels, menus, taskbars, etc.  If there is a way to do that
 175     // for this platform please fix this function, otherwise it defaults
 176     // to the entire desktop.
 177     if (x) *x = 0;
 178     if (y) *y = 0;
 179     wxDisplaySize(width, height);
 180 }
 181
 182
 183 // Configurable display in wxX11 and wxMotif
 184 static WXDisplay *gs_currentDisplay = NULL;
 185 static wxString gs_displayName;
 186
 187 WXDisplay *wxGetDisplay()
 188 {
 189     if (gs_currentDisplay)
 190         return gs_currentDisplay;
 191     return wxApp::GetDisplay();
 192 }
 193
 194 bool wxSetDisplay(const wxString& display_name)
 195 {
 196     gs_displayName = display_name;
 197
 198     if ( display_name.IsEmpty() )
 199     {
 200         gs_currentDisplay = NULL;
 201
 202         return TRUE;
 203     }
 204     else
 205     {
 206         Display* display = XOpenDisplay((char*) display_name.c_str());
 207
 208         if (display)
 209         {
 210             gs_currentDisplay = (WXDisplay*) display;
 211             return TRUE;
 212         }
 213         else
 214             return FALSE;
 215     }
 216 }
 217
 218 wxString wxGetDisplayName()
 219 {
 220     return gs_displayName;
 221 }
 222
 223 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 224 {
 225     return wxGenericFindWindowAtPoint(pt);
 226 }
 227
 228 // ----------------------------------------------------------------------------
 229 // keycode translations
 230 // ----------------------------------------------------------------------------
 231
 232 #include <X11/keysym.h>
 233
 234 // FIXME what about tables??
 235
 236 int wxCharCodeXToWX(KeySym keySym)
 237 {
 238     int id;
 239     switch (keySym)
 240     {
 241         case XK_Shift_L:
 242         case XK_Shift_R:
 243             id = WXK_SHIFT; break;
 244         case XK_Control_L:
 245         case XK_Control_R:
 246             id = WXK_CONTROL; break;
 247         case XK_BackSpace:
 248             id = WXK_BACK; break;
 249         case XK_Delete:
 250             id = WXK_DELETE; break;
 251         case XK_Clear:
 252             id = WXK_CLEAR; break;
 253         case XK_Tab:
 254             id = WXK_TAB; break;
 255         case XK_numbersign:
 256             id = '#'; break;
 257         case XK_Return:
 258             id = WXK_RETURN; break;
 259         case XK_Escape:
 260             id = WXK_ESCAPE; break;
 261         case XK_Pause:
 262         case XK_Break:
 263             id = WXK_PAUSE; break;
 264         case XK_Num_Lock:
 265             id = WXK_NUMLOCK; break;
 266         case XK_Scroll_Lock:
 267             id = WXK_SCROLL; break;
 268
 269         case XK_Home:
 270             id = WXK_HOME; break;
 271         case XK_End:
 272             id = WXK_END; break;
 273         case XK_Left:
 274             id = WXK_LEFT; break;
 275         case XK_Right:
 276             id = WXK_RIGHT; break;
 277         case XK_Up:
 278             id = WXK_UP; break;
 279         case XK_Down:
 280             id = WXK_DOWN; break;
 281         case XK_Next:
 282             id = WXK_NEXT; break;
 283         case XK_Prior:
 284             id = WXK_PRIOR; break;
 285         case XK_Menu:
 286             id = WXK_MENU; break;
 287         case XK_Select:
 288             id = WXK_SELECT; break;
 289         case XK_Cancel:
 290             id = WXK_CANCEL; break;
 291         case XK_Print:
 292             id = WXK_PRINT; break;
 293         case XK_Execute:
 294             id = WXK_EXECUTE; break;
 295         case XK_Insert:
 296             id = WXK_INSERT; break;
 297         case XK_Help:
 298             id = WXK_HELP; break;
 299
 300         case XK_KP_Multiply:
 301             id = WXK_MULTIPLY; break;
 302         case XK_KP_Add:
 303             id = WXK_ADD; break;
 304         case XK_KP_Subtract:
 305             id = WXK_SUBTRACT; break;
 306         case XK_KP_Divide:
 307             id = WXK_DIVIDE; break;
 308         case XK_KP_Decimal:
 309             id = WXK_DECIMAL; break;
 310         case XK_KP_Equal:
 311             id = '='; break;
 312         case XK_KP_Space:
 313             id = ' '; break;
 314         case XK_KP_Tab:
 315             id = WXK_TAB; break;
 316         case XK_KP_Enter:
 317             id = WXK_RETURN; break;
 318         case XK_KP_0:
 319             id = WXK_NUMPAD0; break;
 320         case XK_KP_1:
 321             id = WXK_NUMPAD1; break;
 322         case XK_KP_2:
 323             id = WXK_NUMPAD2; break;
 324         case XK_KP_3:
 325             id = WXK_NUMPAD3; break;
 326         case XK_KP_4:
 327             id = WXK_NUMPAD4; break;
 328         case XK_KP_5:
 329             id = WXK_NUMPAD5; break;
 330         case XK_KP_6:
 331             id = WXK_NUMPAD6; break;
 332         case XK_KP_7:
 333             id = WXK_NUMPAD7; break;
 334         case XK_KP_8:
 335             id = WXK_NUMPAD8; break;
 336         case XK_KP_9:
 337             id = WXK_NUMPAD9; break;
 338         case XK_F1:
 339             id = WXK_F1; break;
 340         case XK_F2:
 341             id = WXK_F2; break;
 342         case XK_F3:
 343             id = WXK_F3; break;
 344         case XK_F4:
 345             id = WXK_F4; break;
 346         case XK_F5:
 347             id = WXK_F5; break;
 348         case XK_F6:
 349             id = WXK_F6; break;
 350         case XK_F7:
 351             id = WXK_F7; break;
 352         case XK_F8:
 353             id = WXK_F8; break;
 354         case XK_F9:
 355             id = WXK_F9; break;
 356         case XK_F10:
 357             id = WXK_F10; break;
 358         case XK_F11:
 359             id = WXK_F11; break;
 360         case XK_F12:
 361             id = WXK_F12; break;
 362         case XK_F13:
 363             id = WXK_F13; break;
 364         case XK_F14:
 365             id = WXK_F14; break;
 366         case XK_F15:
 367             id = WXK_F15; break;
 368         case XK_F16:
 369             id = WXK_F16; break;
 370         case XK_F17:
 371             id = WXK_F17; break;
 372         case XK_F18:
 373             id = WXK_F18; break;
 374         case XK_F19:
 375             id = WXK_F19; break;
 376         case XK_F20:
 377             id = WXK_F20; break;
 378         case XK_F21:
 379             id = WXK_F21; break;
 380         case XK_F22:
 381             id = WXK_F22; break;
 382         case XK_F23:
 383             id = WXK_F23; break;
 384         case XK_F24:
 385             id = WXK_F24; break;
 386         default:
 387             id = (keySym <= 255) ? (int)keySym : -1;
 388     }
 389
 390     return id;
 391 }
 392
 393 KeySym wxCharCodeWXToX(int id)
 394 {
 395     KeySym keySym;
 396
 397     switch (id)
 398     {
 399         case WXK_CANCEL:            keySym = XK_Cancel; break;
 400         case WXK_BACK:              keySym = XK_BackSpace; break;
 401         case WXK_TAB:            keySym = XK_Tab; break;
 402         case WXK_CLEAR:        keySym = XK_Clear; break;
 403         case WXK_RETURN:        keySym = XK_Return; break;
 404         case WXK_SHIFT:        keySym = XK_Shift_L; break;
 405         case WXK_CONTROL:        keySym = XK_Control_L; break;
 406         case WXK_MENU :        keySym = XK_Menu; break;
 407         case WXK_PAUSE:        keySym = XK_Pause; break;
 408         case WXK_ESCAPE:        keySym = XK_Escape; break;
 409         case WXK_SPACE:        keySym = ' '; break;
 410         case WXK_PRIOR:        keySym = XK_Prior; break;
 411         case WXK_NEXT :        keySym = XK_Next; break;
 412         case WXK_END:        keySym = XK_End; break;
 413         case WXK_HOME :        keySym = XK_Home; break;
 414         case WXK_LEFT :        keySym = XK_Left; break;
 415         case WXK_UP:        keySym = XK_Up; break;
 416         case WXK_RIGHT:        keySym = XK_Right; break;
 417         case WXK_DOWN :        keySym = XK_Down; break;
 418         case WXK_SELECT:        keySym = XK_Select; break;
 419         case WXK_PRINT:        keySym = XK_Print; break;
 420         case WXK_EXECUTE:        keySym = XK_Execute; break;
 421         case WXK_INSERT:        keySym = XK_Insert; break;
 422         case WXK_DELETE:        keySym = XK_Delete; break;
 423         case WXK_HELP :        keySym = XK_Help; break;
 424         case WXK_NUMPAD0:        keySym = XK_KP_0; break;
 425         case WXK_NUMPAD1:        keySym = XK_KP_1; break;
 426         case WXK_NUMPAD2:        keySym = XK_KP_2; break;
 427         case WXK_NUMPAD3:        keySym = XK_KP_3; break;
 428         case WXK_NUMPAD4:        keySym = XK_KP_4; break;
 429         case WXK_NUMPAD5:        keySym = XK_KP_5; break;
 430         case WXK_NUMPAD6:        keySym = XK_KP_6; break;
 431         case WXK_NUMPAD7:        keySym = XK_KP_7; break;
 432         case WXK_NUMPAD8:        keySym = XK_KP_8; break;
 433         case WXK_NUMPAD9:        keySym = XK_KP_9; break;
 434         case WXK_MULTIPLY:        keySym = XK_KP_Multiply; break;
 435         case WXK_ADD:        keySym = XK_KP_Add; break;
 436         case WXK_SUBTRACT:        keySym = XK_KP_Subtract; break;
 437         case WXK_DECIMAL:        keySym = XK_KP_Decimal; break;
 438         case WXK_DIVIDE:        keySym = XK_KP_Divide; break;
 439         case WXK_F1:        keySym = XK_F1; break;
 440         case WXK_F2:        keySym = XK_F2; break;
 441         case WXK_F3:        keySym = XK_F3; break;
 442         case WXK_F4:        keySym = XK_F4; break;
 443         case WXK_F5:        keySym = XK_F5; break;
 444         case WXK_F6:        keySym = XK_F6; break;
 445         case WXK_F7:        keySym = XK_F7; break;
 446         case WXK_F8:        keySym = XK_F8; break;
 447         case WXK_F9:        keySym = XK_F9; break;
 448         case WXK_F10:        keySym = XK_F10; break;
 449         case WXK_F11:        keySym = XK_F11; break;
 450         case WXK_F12:        keySym = XK_F12; break;
 451         case WXK_F13:        keySym = XK_F13; break;
 452         case WXK_F14:        keySym = XK_F14; break;
 453         case WXK_F15:        keySym = XK_F15; break;
 454         case WXK_F16:        keySym = XK_F16; break;
 455         case WXK_F17:        keySym = XK_F17; break;
 456         case WXK_F18:        keySym = XK_F18; break;
 457         case WXK_F19:        keySym = XK_F19; break;
 458         case WXK_F20:        keySym = XK_F20; break;
 459         case WXK_F21:        keySym = XK_F21; break;
 460         case WXK_F22:        keySym = XK_F22; break;
 461         case WXK_F23:        keySym = XK_F23; break;
 462         case WXK_F24:        keySym = XK_F24; break;
 463         case WXK_NUMLOCK:    keySym = XK_Num_Lock; break;
 464         case WXK_SCROLL:     keySym = XK_Scroll_Lock; break;
 465         default:             keySym = id <= 255 ? (KeySym)id : 0;
 466     }
 467
 468     return keySym;
 469 }
 470
 471 // ----------------------------------------------------------------------------
 472 // Some colour manipulation routines
 473 // ----------------------------------------------------------------------------
 474
 475 void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
 476 {
 477     int h = hsv->h;
 478     int s = hsv->s;
 479     int v = hsv->v;
 480     int r = 0, g = 0, b = 0;
 481     int i, f;
 482     int p, q, t;
 483     s = (s * wxMAX_RGB) / wxMAX_SV;
 484     v = (v * wxMAX_RGB) / wxMAX_SV;
 485     if (h == 360) h = 0;
 486     if (s == 0) { h = 0; r = g = b = v; }
 487     i = h / 60;
 488     f = h % 60;
 489     p = v * (wxMAX_RGB - s) / wxMAX_RGB;
 490     q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
 491     t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
 492     switch (i)
 493     {
 494     case 0: r = v, g = t, b = p; break;
 495     case 1: r = q, g = v, b = p; break;
 496     case 2: r = p, g = v, b = t; break;
 497     case 3: r = p, g = q, b = v; break;
 498     case 4: r = t, g = p, b = v; break;
 499     case 5: r = v, g = p, b = q; break;
 500     }
 501     rgb->red = r << 8;
 502     rgb->green = g << 8;
 503     rgb->blue = b << 8;
 504 }
 505
 506 void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
 507 {
 508     int r = rgb->red >> 8;
 509     int g = rgb->green >> 8;
 510     int b = rgb->blue >> 8;
 511     int maxv = wxMax3(r, g, b);
 512     int minv = wxMin3(r, g, b);
 513     int h = 0, s, v;
 514     v = maxv;
 515     if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
 516     else s = 0;
 517     if (s == 0) h = 0;
 518     else
 519     {
 520         int rc, gc, bc, hex = 0;
 521         rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
 522         gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
 523         bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
 524         if (r == maxv) { h = bc - gc, hex = 0; }
 525         else if (g == maxv) { h = rc - bc, hex = 2; }
 526         else if (b == maxv) { h = gc - rc, hex = 4; }
 527         h = hex * 60 + (h * 60 / wxMAX_RGB);
 528         if (h < 0) h += 360;
 529     }
 530     hsv->h = h;
 531     hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
 532     hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
 533 }
 534
 535 void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
 536 {
 537 #if !wxUSE_NANOX
 538     int llp;
 539
 540     int screen = DefaultScreen(d);
 541     int num_colors = DisplayCells(d,screen);
 542
 543     XColor *color_defs = new XColor[num_colors];
 544     for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
 545     XQueryColors(d,cmp,color_defs,num_colors);
 546
 547     wxHSV hsv_defs, hsv;
 548     wxXColorToHSV(&hsv,xc);
 549
 550     int diff, min_diff = 0, pixel = 0;
 551
 552     for(llp = 0;llp < num_colors;llp++)
 553     {
 554         wxXColorToHSV(&hsv_defs,&color_defs[llp]);
 555         diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
 556             wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
 557             wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
 558         if (llp == 0) min_diff = diff;
 559         if (min_diff > diff) { min_diff = diff; pixel = llp; }
 560         if (min_diff == 0) break;
 561     }
 562
 563     xc -> red = color_defs[pixel].red;
 564     xc -> green = color_defs[pixel].green;
 565     xc -> blue = color_defs[pixel].blue;
 566     xc -> flags = DoRed | DoGreen | DoBlue;
 567
 568 /*  FIXME, TODO
 569     if (!XAllocColor(d,cmp,xc))
 570         cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
 571 */
 572
 573     delete[] color_defs;
 574 #endif
 575 }
 576
 577 void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
 578 {
 579     if (!XAllocColor(d,cmp,xc))
 580     {
 581         //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
 582         wxAllocNearestColor(d,cmp,xc);
 583     }
 584 }
 585
 586 #ifdef __WXDEBUG__
 587 wxString wxGetXEventName(XEvent& event)
 588 {
 589 #if wxUSE_NANOX
 590     wxString str(wxT("(some event)"));
 591     return str;
 592 #else
 593     int type = event.xany.type;
 594             static char* event_name[] = {
 595                 "", "unknown(-)",                                         // 0-1
 596                 "KeyPress", "KeyRelease", "ButtonPress", "ButtonRelease", // 2-5
 597                 "MotionNotify", "EnterNotify", "LeaveNotify", "FocusIn",  // 6-9
 598                 "FocusOut", "KeymapNotify", "Expose", "GraphicsExpose",   // 10-13
 599                 "NoExpose", "VisibilityNotify", "CreateNotify",           // 14-16
 600                 "DestroyNotify", "UnmapNotify", "MapNotify", "MapRequest",// 17-20
 601                 "ReparentNotify", "ConfigureNotify", "ConfigureRequest",  // 21-23
 602                 "GravityNotify", "ResizeRequest", "CirculateNotify",      // 24-26
 603                 "CirculateRequest", "PropertyNotify", "SelectionClear",   // 27-29
 604                 "SelectionRequest", "SelectionNotify", "ColormapNotify",  // 30-32
 605                 "ClientMessage", "MappingNotify",                         // 33-34
 606                 "unknown(+)"};                                            // 35
 607             type = wxMin(35, type); type = wxMax(1, type);
 608         wxString str(event_name[type]);
 609         return str;
 610 #endif
 611 }
 612 #endif
 613
 614 bool wxWindowIsVisible(Window win)
 615 {
 616     XWindowAttributes wa;
 617     XGetWindowAttributes(wxGlobalDisplay(), win, &wa);
 618
 619     return (wa.map_state == IsViewable);
 620 }